Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
The two oldest cats on record lived to 38 and 34 years old, both were owned by the same owner and lived off a diet of bacon, eggs, broccoli and coffee.
12
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
Denmark has twice as many pigs as there are people.
66
A group of pugs is called a grumble.
10
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17